Malicious PDF — malware analysis report

Static analysis result for SHA-256 8bb794dbed0a5874…

MALICIOUS

PDF

72.5 KB Created: 2021-03-14 11:43:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 322867241943153ea6e5b75d91d68e93 SHA-1: e112b278b1733bc44211b3f32f97aa6bbf412d99 SHA-256: 8bb794dbed0a5874dc7ef6d984e3bf8cfc9468810b8193da021d9f90fa0a8c09
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was flagged by a machine learning classifier and ClamAV as malicious, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to 'druttle.ru', which is likely part of a phishing or malware distribution scheme. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest it's designed to trick users into visiting a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://druttle.ru/123?utm_term=buildbox+game+templates PDF link annotation
    • https://cdn.sqhk.co/pesasotiro/cFYrYGV/87626234060.pdfIn PDF document text
    • https://cdn.sqhk.co/sokulutesi/ggh5hhc/linkin_park_recharged_rar.pdfIn PDF document text
    • https://cdn.sqhk.co/kadeposamo/jhhjTI1/moxekasawabon.pdfIn PDF document text
    • https://cdn.sqhk.co/naziwixolagu/3PiewwL/unbordered_foreign_friend_chat_download.pdfIn PDF document text
    • https://cdn.sqhk.co/belesobikezi/ieulgg8/little_mermaid_wallpaper_hd.pdfIn PDF document text
    • https://cdn.sqhk.co/sixerusesebu/FjbghNu/quotation_template_for_catering.pdfIn PDF document text
    • http://cooldomen.space/french_acrylic_nails_square63rbb.pdfIn PDF document text
    • https://cdn.sqhk.co/kowazodonaf/Jhggf1I/gunship_sequel_ww2_mod_apk_android_1.pdfIn PDF document text
    • https://cdn.sqhk.co/fuludasowipu/ghjifgj/runusufagozaji.pdfIn PDF document text
    • http://pornbustyvids.com/43806757809yhimp.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/muvazi/kixanovababefefejuv.pdfIn PDF document text
    • https://s3.amazonaws.com/divelatoxa/79772688655.pdfIn PDF document text
    • https://s3.amazonaws.com/satuja/cooking_academy_1_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/dorobukasawituw/my_passport_wireless_pro_not_showing_up_usb.pdfIn PDF document text
    • https://s3.amazonaws.com/wavunot/puxelukesare.pdfIn PDF document text
    • https://s3.amazonaws.com/simujix/hwy_1_accident_report.pdfIn PDF document text
    • https://s3.amazonaws.com/gozilum/christmas_carol_free.pdfIn PDF document text
    • https://s3.amazonaws.com/dugibabafod/endorsement_letter_format_sample.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d471.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD471 5216 bytes
SHA-256: a7d452940359978038b6cf87a54713f1ae58d1fe38737a587027ba7679684191
font_01_sfnt_off0000e639.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE639 9736 bytes
SHA-256: 69d36e2be0f0fd3ac17e55c3ce56362c71415f591ac6572bd5503bd7eba8442f
font_02_sfnt_off0001074c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1074C 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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